Set of keys with red leather fob

Found a set of keys this morning around 8:30am in the parking lot behind the Cedar Rapids Public Library on 5th Ave SE. They’re on a bright red leather fob and include a silver car key plus a black house key. A small white enamel tag engraved with 'JR' dangles from one ring, along with a worn pinecone charm. I know losing keys is stressful, and I’d really like to help the owner get them back.